SPI Communication

Direct communication using the SPI interface

SPI, or Serial Peripheral Interface, is a synchronous serial data link standard that operates in full duplex mode. It is commonly used in the test and measurement field. Typical uses include communicating with micro controllers, EEPROMs, A2D devices, embedded controllers, etc. Using Instrument Control Toolbox™ SPI support, you can open connections with individual chips and read and write over the connections.

Create the interface object using the spi function, and use the read and write functions for communication. To use the SPI interface, you must have a Total Phase Aardvark host adaptor or an NI-845x adaptor board installed. See Configuring SPI Communication for details.


instrhwinfo Information about available hardware
spi Create SPI object
read Read binary data from SPI instrument
write Write binary data to SPI instrument
writeAndRead Write and read binary data from SPI instrument
methods Class method names and descriptions
disp Display instrument object summary information
connect Connect device object to instrument
disconnect Disconnect device object from instrument
clear Remove instrument objects from MATLAB workspace
Was this topic helpful?